Well I hope Comcast resolves the problem quicker for you guys than they did for me. For once my area has good HD channels. With my problem it wasn't until the HSI users started complaing that they bumped the priority. Had 3 weeks of the pixelating audio dropping mess on all QAM256 channels except ABC/707. I naively thought if I just let it sit, it would fix itself, resulting in an extra week of pixelation. I suggest you call it in and complain, since there are so few HD users (relatively) that they probably have no idea it's affecting multiple people. They'll spend a week just to determine it isn't a problem local to your home (which is always there initial assumption) and that just adds delays to getting the real problem fixed.